Comparison between our X-ray masses and the weak lensing masses published in Schrabback et al. (2018). All estimates for a given cluster are consistent within the statistical errors. However, there is a general trend of smaller lensing mass than the HE mass, contrary to expectation. Note also the higher statistical precision of the X-ray masses. Top left panel: comparison between and weak lensing masses estimated at R₅₀₀, centred on the X-ray peak. The grey area for the weak lensing represents the statistical errors. The black solid bars represent the sum in quadrature of systematic and statistical errors. The blue and red lines represent the bias, (1 − b), between the X-ray hydrostatic and weak lensing mass as measured by Weighting the Giants (WtG, von der Linden et al. 2014) and by the Canadian Cluster Comparison Project (CCCP, Hoekstra et al. 2015), respectively. To better visualise the points, we crop the lower values of SPT-CLJ2341-5119 and SPT-CLJ0546-5345, which are of the order of ∼10⁻¹ × 10¹⁴ M_⊙. Top right panel: same as the top left panel, except showing the comparison between the hydrostatic mass computed at , , and the weak lensing masses. Bottom left and right panels: same as the top panels except that weak lensing masses are computed using the Sunyavez-Zeldovich (SZ) peak as the centre. The error–weighted mean ratio and corresponding errors are reported in each panel.